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Thread: DIY Electrical Evaporator Design - Page 1

  1. #21
    Join Date
    Jan 2006
    Location
    Oneida NY
    Posts
    9,450

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    You can make sap by taking 1 pt of maple syrup and add about 40 pints of good potable soft water, (not softened with salt). then mix it well. However when you get back to syrup it will be much darker than what you started with.
    Dave Klish about 1320 taps in '15, down to about 700 in '16, up to 1000 for 2019?
    2012 Mahindra 36 HP 4x4/ loader/cab/heat/AC:-)
    added a gooseneck equipment trailer and F350 to tow it to haul more sap
    3x8 raised flue evaporator
    250 GPH converted to electric, RO by Ray Gingerich
    6.32 KW solar system, 1.48KW is battery backed up, all net metered
    http://s1041.photobucket.com/albums/...anssugarhouse/
    website: www.cnymaple.com

  2. #22
    Join Date
    Mar 2015
    Location
    Alcona County, Michigan
    Posts
    1,134

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    I finished the first sap boil tonight. I am extremely pleased with how it went. I reported the results here http://mapletrader.com/community/sho...ric-evaporator, but a brief recap is that the 4000W element worked fine with an outdoor temp that fell below freezing during the boil. I calculated the evap rate at 1.25 gph from a cold start. I added whole gallons of cold sap during the boil and the boil recovered quickly each time. I walked away and let the box do its thing for half hour periods throughout the boil. I wish I had thought to measure the box internal temp during the boil. I'll try to remember that next time.
    Last edited by Cedar Eater; 02-29-2016 at 12:25 AM.
    CE
    44° 41′ 3″ N

    2019 -- 44 Red Maples - My home and sugarbush are for sale.
    2018 -- 48 Red Maples, 7 gallons
    2017 -- 84 Red Maples, 1 Sugar Maple, and 1 Silver Maple , 13 gallons
    2016 -- 55 Red Maples, 8 gallons
    2015 -- 15 Red Maples, 6 Birches - 3+ gallons maple syrup
    An awning over my deck is my sugar shack.
    An electrified kitchen sink and an electrified steam table pan are my evaporators.

  3. #23
    Join Date
    Mar 2015
    Location
    Alcona County, Michigan
    Posts
    1,134

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    It's late and I might not be thinking straight, but my simplified view of the energy cost per gallon of syrup produced, assuming 40 gallons sap per gallon of syrup is

    39 gallons sap boiled/1.25gph = 31.2 hours boiling time x 4kW = 124.8kWh x $.137473/kWh = $17.16/gallon

    I have no idea how that compares to propane at current prices. I know I can beat it with wood, but I can't walk away from a wood fire for a half hour at a time.
    CE
    44° 41′ 3″ N

    2019 -- 44 Red Maples - My home and sugarbush are for sale.
    2018 -- 48 Red Maples, 7 gallons
    2017 -- 84 Red Maples, 1 Sugar Maple, and 1 Silver Maple , 13 gallons
    2016 -- 55 Red Maples, 8 gallons
    2015 -- 15 Red Maples, 6 Birches - 3+ gallons maple syrup
    An awning over my deck is my sugar shack.
    An electrified kitchen sink and an electrified steam table pan are my evaporators.

  4. #24
    Join Date
    Mar 2015
    Location
    Alcona County, Michigan
    Posts
    1,134

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    After 16 hours of runtime, the fuse holder failed by melting/burning. I measured the temperature inside the box while it was in operation and it never went above 70F and only one side of the holder failed. It seems clear that one terminal of the heating element got much hotter than the other. I'm not sure what caused this but I suspect it was just that the nut on the heating element terminal was not tight. I really like the idea of plugging the pan into the base, so I'm going to work at finding a way to keep doing that, but for now I've just hardwired the leads to the heating element terminals.

    fuseblockfail.jpg
    CE
    44° 41′ 3″ N

    2019 -- 44 Red Maples - My home and sugarbush are for sale.
    2018 -- 48 Red Maples, 7 gallons
    2017 -- 84 Red Maples, 1 Sugar Maple, and 1 Silver Maple , 13 gallons
    2016 -- 55 Red Maples, 8 gallons
    2015 -- 15 Red Maples, 6 Birches - 3+ gallons maple syrup
    An awning over my deck is my sugar shack.
    An electrified kitchen sink and an electrified steam table pan are my evaporators.

  5. #25
    Join Date
    Mar 2015
    Location
    Alcona County, Michigan
    Posts
    1,134

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    I've finished two small batches this year with a new modification that allows me to plug the pan into the base so the leads for the heating element terminals don't have to be directly connected. I salvaged the spring clips from the melted fuse holder and mounted them at the top of two small towers made from two different sizes of flat washers. The washers radiate away the heat that comes down from the heating element terminals. So far, the wood beneath the towers where the mounting screws attach has shown no sign of excessive heating and because it is dry, it is good electrical insulation.

    springclips.jpg
    CE
    44° 41′ 3″ N

    2019 -- 44 Red Maples - My home and sugarbush are for sale.
    2018 -- 48 Red Maples, 7 gallons
    2017 -- 84 Red Maples, 1 Sugar Maple, and 1 Silver Maple , 13 gallons
    2016 -- 55 Red Maples, 8 gallons
    2015 -- 15 Red Maples, 6 Birches - 3+ gallons maple syrup
    An awning over my deck is my sugar shack.
    An electrified kitchen sink and an electrified steam table pan are my evaporators.

  6. #26
    Join Date
    Mar 2019
    Location
    Québec
    Posts
    1

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    Dear community,

    I'm a folk from a suburb of Montréal (Laval) where I tapped a dozen of maple trees of neihbours around, in exchange of sirup. I have 20 taps.
    Last year I evaporated 5 taps in my kitchen, did a hole mess. So this year I was looking around on internet to find ways to evaporate the water. First taught of a rocket stove, but with neihbours juste a fence away, it was not the best to play with fire.
    Then I ended up here in this thread. Wow. It inspired my plan from A to Z. Thank you!

    So here is in few words my set-up:
    - could not plug myself in a 240V, so I bought 6 120 V element of 1440 Watts each, for a total potential power of 8640 watts. My breakers circuit are 15 amps and each element with pull 12.5 amp so I should be fine plugging my elements in 6 different circuits of the house.
    - the difficult part was to fit the element in a cauldron, because the elements have a diameter of 1''. Did a hole with a 1''1/4 hole saw. Finding a 1''nut was hard, because it's a NPS thread (didn't know the difference between NPT thread and NPS thread, the latter being not common). With silicone washer, the elements are watertight. The cauldron has a volume of 100 litres.

    Now my trees are tapped, waiting for the sap and will probably first test this version of electrical evaporator sunday. As people said, Quebec electricity is 6 cents/kw-hr!

    Here are some pictures. Comments and insights are more than welcome


    IMG_1406.jpg
    IMG_1407.jpg IMG_1408.jpg
    Last edited by Colin1234; 03-13-2019 at 10:29 PM. Reason: adding picture

  7. #27
    Join Date
    Mar 2011
    Location
    kentucky
    Posts
    101

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    Looks like it has great potential to really boil! Let us know how it goes...
    Dave
    2014 30 taps, steam tray pans
    2015 ~100 taps, in conjunction with University of Louisville
    2x5 Smoky Lake hybrid pan

  8. #28
    Join Date
    Mar 2015
    Location
    Alcona County, Michigan
    Posts
    1,134

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    Quote Originally Posted by Colin1234 View Post
    Then I ended up here in this thread. Wow. It inspired my plan from A to Z. Thank you!
    You're welcome! Glad to see that you're trying something different. You might want to run with your level down close to the top of the elements to maximize your boil rate. Also set your pan in a non-flammable, non-conductive insulator to cut out heat loss through the bottom. I would love to see and hear how it works for you.
    Last edited by Cedar Eater; 03-17-2019 at 10:34 AM.
    CE
    44° 41′ 3″ N

    2019 -- 44 Red Maples - My home and sugarbush are for sale.
    2018 -- 48 Red Maples, 7 gallons
    2017 -- 84 Red Maples, 1 Sugar Maple, and 1 Silver Maple , 13 gallons
    2016 -- 55 Red Maples, 8 gallons
    2015 -- 15 Red Maples, 6 Birches - 3+ gallons maple syrup
    An awning over my deck is my sugar shack.
    An electrified kitchen sink and an electrified steam table pan are my evaporators.

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